Like most children, most books are born with a quiet and selfless group of attendants at the bedside. This book is no exception. Not only do I want to thank them for having made my work much easier and certainly more enjoyable, but something must be said for the good spirit and unflinching good humor with which they have borne my almost parental conversations about Locke for the past several years. Every author should be aware that no one is more single-minded than a new father.
At Yale University Lewis P. Curtis and Franklin L. Baumer first tried to teach me what England and intellectual history were really like. I am grateful to both for their continuing friendship and helpful advice. Also to Yale I am indebted for financial support in the form of a Yale College Graduate Fellowship and the M. L. Marshall--J. M. S. Allison Fellowship. Without their help England would have been only an historical fiction. Marie and Rupert Hall of the University of London have not only opened their wide and relevant knowledge of the history of science to me, but their home and hospitality as well. Wolfgang von Leyden of Durham has been a most helpful guide through much of Locke's philosophy. Walter and Esther Houghton of Wellesley College have proved extraordinarily generous of their time, labor and friendship. Hans Aarsleff of Princeton, Quentin Skinner and John Dunn of Cambridge, Nienke Begemann of Leyden and Cambridge, and Rosalie Colie of Iowa have been wonderful friends as well as sources of and sounding-boards for many ideas. My favorite bookman Arnold Muirhead of St Albans has been also a great friend and advisor; he has read the first chapter in typescript and lent me his rare copy of Francis Brokesby's Of Education ( 1701). John Harrison of the Cambridge University Library and the staffs of many European and American libraries, especially those of Harvard, Yale, Amsterdam, Cambridge, Oxford, the British Museum, and the Bibliothèque du Protestantisme Français in Paris, have cheerfully despatched many bibliographical chores which I have inflicted upon them. Mr L. C. Spaull, Archivist of Westminster School, has graciously confirmed what little I have been able to gather about Locke's years there. And Dr E. S. de Beer, the editor of Locke's enormous correspondence, read the